package cn.threecubic.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author Terminator
 * @date 2021/10/28 9:16
 */
@Service
public class PaymentService {

    public String paymentInfo_OK(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + "paymentInfo_OK,id: " + id + "\t哈哈哈";
    }


    @HystrixCommand(fallbackMethod = "paymentInfo_TimeoutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String paymentInfo_TimeOut(Integer id) {
//        int i = 10/0;
        int timeNumber = 3;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() + "paymentInfo_TimeOut,id: " + id + "\t哈哈哈" + "\t耗时（秒）：" + timeNumber;
    }

    private String paymentInfo_TimeoutHandler(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + "系统繁忙或者报错，请稍后再试,id: " + id + "\t兜底方法";
    }

    // 服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties =  {
            @HystrixProperty(name = "circuitBreaker.enabled" , value = "true"),
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold" , value = "10"),
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds" , value = "10000"),
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage" , value = "60")
    })
    public String paymentCircuitBreaker(@PathVariable Integer id) {
        if (id < 0) {
            throw new RuntimeException("id 不能为负数");
        }
        String uuid = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号为" + uuid;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable Integer id) {
        return "id 不能为负数，请稍后再试，id：" + id;
    }

}
